org.springframework.webflow.config.ExecutionListenersBeanDefinitionParser Maven / Gradle / Ivy
/*
* Copyright 2002-2006 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.webflow.config;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.ManagedMap;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.util.xml.DomUtils;
import org.springframework.webflow.execution.factory.ConditionalFlowExecutionListenerLoader;
import org.w3c.dom.Element;
/**
* {@link BeanDefinitionParser} for the <execution-listeners>
* tag.
*
* @author Ben Hale
*/
class ExecutionListenersBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
// elements and attributes
private static final String LISTENER_ELEMENT= "listener";
// properties
private static final String LISTENERS_PROPERTY = "listeners";
private static final String CRITERIA_ATTRIBUTE = "criteria";
private static final String REF_ATTRIBUTE = "ref";
protected Class getBeanClass(Element element) {
return ConditionalFlowExecutionListenerLoader.class;
}
protected void doParse(Element element, BeanDefinitionBuilder definitionBuilder) {
List listenerElements = DomUtils.getChildElementsByTagName(element, LISTENER_ELEMENT);
definitionBuilder.addPropertyValue(LISTENERS_PROPERTY, getListenersWithCriteria(listenerElements));
}
/**
* Creates a map of listeners with their associated criteria.
* @param listeners the list of listener elements from the bean definition
* @return a map containing keys that are references to given listeners
* and values of string that represent the criteria
*/
private Map getListenersWithCriteria(List listeners) {
Map listenersWithCriteria = new ManagedMap(listeners.size());
for (Iterator i = listeners.iterator(); i.hasNext();) {
Element listenerElement = (Element)i.next();
RuntimeBeanReference ref = new RuntimeBeanReference(listenerElement.getAttribute(REF_ATTRIBUTE));
String criteria = listenerElement.getAttribute(CRITERIA_ATTRIBUTE);
listenersWithCriteria.put(ref, criteria);
}
return listenersWithCriteria;
}
}